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` To all tolwhom itmaj/ concern;

i `in the county: of Wayne and State of Michigan, have lnventr'ad` a new` and ,improved Excavating-Machine I doherebyfdeclare that the followingis a full,`

and

` `clear-,fandexact description thereof, which will enable others skilled 1n the art to make and luse the same,

l formingafpnrt of this speoiication'.

ingmachines, and consists in a combination with the y horizontally-revolving platform, for turning the scoop i and pistons,` so arrangedjthat `the turning may he lotherwiseforced` into the cylindersand actingou the pistons.

H ing and for discharging it. .i l

`The invention also consists in an improved arrangement of tripping and closing apparatus for the bottom. of the scoop, made toopen anddischarge thcreat. l Figure-1 represents a side elevation of `my improved i machine, the dotted liueslrepresenting thcscoop and 1 bperatingdevices inthe elevatediposition for dumping. e i f y "Figure 2 represents a plan-viewofthesame, with Htheengines,.pumps, and pipe-connectionsto be used, shown in dotted lines." l l 4 lSimilar letters `of reference indicate corresponding Ar`epresents the vplatform `for the support of the operating parts. i It is mounted on a vertical pivot, B, rising up from fandixedto the axis of a table, C, wwhereon the' platformlis to revolve horizontally, as is required for such machines.` e i e e E is a wheel on the top of the` pivot, and i'xed toit. i `F representscyliuders xed on the platform A, and `provided with pistons G, behind which, in the cyline ders, water or other liquider airis to be forced through y pipes I, shown iu dotted lines, todrive the pistons outward. e e i i l `1-1 is a cord orwirerope, attachedat Vboth ends to e e theplatform A,.and passing overthe projecting ends of the pistons, also around `the wheel E, as shown. The cord is adiusted when -both pistons are moved t e back in thecylinders,iand madeas taut as possible.

',yJorINfA.summier DETROIT, MioHIGAmjAssIGNon To HIMSELF,

y i i r l sosEPIrLnDEnLE, ANTHONYLEDERLE, AND JOHN H.,WELLs.

` y Bc it known thatI, JoHNA. Burner, of Detroit,

i reference being had Sto theaccompanying drawing,

` p gear-wheels, gearing with the wheel E This lnvcntxonrelates to improvements in excavat-` audits supports and the pivot thereof', of cylinders effected by water'or other liquids or air, pumped or w'lheinvcntion also consstsn aenmbination with.

` i The outer ends of the pistons are provided with groovcd 1' e' mam Patent 1v.1o5,ss3`,`dea Auguste, 1ero.

`i,znrsugo`v'rzrlxzuir'r IN nxcAvATma-Macmns to in the Letters futsal: and looking put ofthe Ilma the platform around the pivot in one direction, and, when fo'rced into the otheroylinder, will turn it the other way. y n

The cylinder-pistons and rope are preferably madclong enough to turn the platform a whole revolution.

Of course the pistons may be connected to the wheel `E in various ways to effect the turning, or the turning maybe effected by causing the pistons to turn or with the other gear-wheels attached to the bed O.

L represents cylinders containing` pistons, provided with rods for working the scoop M, which is p'ivoted at N to the cross-head c, attached' to the outer ends of the ways q.

I now propose to combine other cylinders, R, with the cylinders L and the scoop, to aid in working the latter, and in this example I attach these cylinders to' .the ways Q, connecting the pistons to cross-heads S,

and connecting the latter to thescoop by articulated links .T U.

' These cylinders R and'pistons are designed to work, in conjunction with the others, '11, for forcing the scoop into the ground and turning it up as it fills, which is done by imparting thesamc speed to the pist-ons of both cylinders at rst, then lessening the speed of `the upper ones, which may be done by gauging the water forced in againstA the pistons.

The scoop may be tilted by moving out the pistons of cylinders R, or by holding them stilland moving backthe pistousof cylinders L.

When the scoop is emptied, all thepistons are run back together for the next operation.

' At All have .represented a water-tank, in dotted lines; for containing the water to be used, into which the water is discharged' after using.

'A2 represents pipes, also in dotted lines, to be used nection with the pumps, and an exhaust leading to the water-tank, but they may be arrangedin any preferred way.

I propose to make the scoop so as to open at the bottom, for discharging therefrom when required, and

ftherefore suspend the bottom V, which is made separate from the other part,on the arms W, which are pivoted 'at X, and rising at the upper ends near to the top, where they are engaged, by spring-catchesY,

y to hold the bottom closed.

The axis of these catches has an arm, Z, attached at one end for the connection of a tripping-cord, byA

which the catches are disengaged from the arms W to open the scoop and let'the contents discharge.

For closing `the bottom of the scoop automatically,-

when the scoop is turned down at the front for taking a load, I ari-ange a spring-bar, #1, on the cross-bars z?,

L. E. WEBB, e

to project downward, that the bottom of the scoop l pistons, ofthe scoop M and the cylinders R and their will strike against it, the bar, and the arms Wwill be i pistons, substantially as specied.-

forced under the catches Y. 3. The combination, with the bottom V of the scoop Having thus described my invention, and arms W, arranged as described, of the holding What I claim as new, and desire to secure by Letters and tipping-catches Y and spring bar z, substantially Patent, isas specified.

1. The oombinton, with the platform and thc The abovo-speoiication of my invention-signed by pivot whereon it qscillates, of the pistons, which are me this 30th day of March, 1870. connected by suitable means, and worked in cylinders l JOHN A'. BAILEY.

by mea-ns of water or other uids, for effecting the oscillation -of the platform, substantially in 'the man- Witnesses:

ner described. Gmo. W. Mmmm,

ALEX. F. Romains.

2; The combination, with the cylinders L and their 

